Hoisting-jack.



No. 802,323. PATBNTED 00T. 17, 1905. F, H, BOBWB.

HOISTING JACK.

APPLICATION YILED JUNE 27,1905.

barman rains FFCE.

Specicaton of Letters Patent.

Patented Oct. 1'?, 1905.

Application filed June 27, 1905. Serial No. 267,264.

To (1,2/ who/lt il; Tim/y concern:

Be it known that 1, FRED H. Ronwn, a citizen et' the United States oilAmerica, residing at Fennimore` in the county et' Grant and State et'Wisconsin, have invented new and uset'ul improvements in HoistingLJacks,of which the following is a specification.

rihis invention relates to hoisting-jacks designed especially forunloading hay or the like, and has for its objects to produce acomparatively simple inexpensive device et' this charaeter which may bereadily transported, one in which the hoisting-drum will be under thorough control of the operator and may be started or stopped at will, onein which the clutch member for controlling the drum may be read ilyactuated, and one wherein the drum-oper ating mechanism may be lockedagainst movement when desired.

With these and other objects in view the invention comprises the novel'features of construction and combination of parts more fullyhereinafter described. u

In the accompany ing drawings, Figure 1 is a perspective view oi adevice embodying the invention. Fig. 2 is a detail view, partly insection and on an enlarged scale, of the clutch members and adjacentparts. Fig. 3 isa face View of the driving-gear.

Referring to the drawings, it will be seen that the :trame oi' thedevice comprises end beams or sills 1, connected by parallel side bars 2and sustaining' vertical uprights or standards 3, attached at theirlower ends to the sills and connected adjacent their upper ends by ahorizontal member or bar t, provided adjacent one end with alongitudinal opening or slot 5, there being attached to the beams 1 anduprights diagonal brace members or struts 6 for strengthening the parts.

Journaled Jfor rotation in the frame and having bearing in the uprights3 is a drive-shaft 7, to one end ot which is iixed a peripherallygroovedbelt-pulley 8, said shaft having a square or other non-circular portion9, on which is slidably disposed a clutch member or sleeve 10, pivotedin the bifurcated end of a lever 11, the upper end et' which is disposedin the guide-slot 5, while pivoted to the upright 3 farthest removed'from said lever is a controlling-lever 12, equipped at its free endwith a handle 13 and connected to the member 11 by a rod or other rigidelement 111.

The clutch member 10, which is normally pressed to engaging position byan expanded spring 15, having bearing at one end against a collar orabutment 16, iixed on the shaft 7, is provided with engaging portions orteeth 17, designed to interlock with corresponding teeth 18, formed uponthe tubular hub 19 ot' aspur-gear 20, iixed upon a tubular bushing 21,having a squared opening to receive portion 9 et' the shaft, whereby thebushing and gear will rotate in unison with the latter, there being'pivoted to the adjacent standard 3 a latching member or dog 22, adaptedfor engagement with the teeth of gear 20, for a purpose which willpresently appear, and normally sustained when in non-engaging positionby a pin or support 23.

The gear 2O meshes with acompanion gear 211, iixed upon the shaft of awinding-drum 25, journaled tor rotation in the frame and having spacedheads 26.

1n practice, supposing' the parts to be in their normal position, asillustrated in Fig. 1, motion is imparted to shaft 7 by means oi' a beltor table (not shown) arranged for travel on the pulley 8 and is thustransmit-ted through the medium ot' gears 20 and 241 to thehoisting-drum 25. During the operation oi' the device, after the loadhas been properly hoisted by the drum, the latter may be released topermit descent of the load onto a wagon er stack by moving thecontrollinglever 12 in the direction indicated by the arrow in Fig. l,thus moving clutch member 10 against the action of spring 15andreleasing gear 20, which may then revolve Jfreely upon thebearing-sleeve 21, as will be readily understood. Should it be desiredat any time to arrest the movement of the parts for holding the load atan elevation, the dog 22 is thrown into engagement with the teeth ofgear 20, thus checking the rotation of the latter, and consequently thatof the drum, through the interengagement ot' the gears 2O and 24.

From. the foregoing it is apparent that I produce a simple deviceadmirably adapted for the attainment o't` the ends in view and one inwhich the hoisting mechanism will be under thorough control of theoperator, it being understood that in attaining these ends minor changesin the details herein set forth may be resorted to without departingfrom the spirit of the invention.

Having thus described the invention, what is claimed is- 1. In a deviceoi' the class described, a frame,

IOO

IIO

a drum rotatively sustained thereby, a gear v in the frame, a gear idlymounted thereon in mesh with the lirst-na1ned gear, a clutch memberfixed upon the shaft, a spring for maintaining the clutch normally inengagement with the idle gear, a member comprised in the frame andprovided with a guide-slot, an arm attached to the clutch and enteredfor movement in said guide-slot, and an operating-lever connected withthe arm for actuating the clutch.

2. In adevice of the class described, a frame, a drum rotatively'sustained thereby, a gear iiXed upon the drum, a drive-shaft having' anon-circular-portion, a clutch member slidable upon said portion forrotation With the shaft,

a pinion idly mounted upon the shaft in mesh with the gear, a spring'for maintaining the clutch normally in engagement With the pinion, aframe member having' a guide-opening, an arm movable in said opening andoperatively engaged With the clutch and an operating-lever connectedwith the arm for actuating the clutch.

In testimony whereof l aliix my signature in l presence of twoWitnesses.

FRED H. ROEWE.

Witnesses:

CHAS. P. HINN, H. B. LEWIS.

